Alright i don't know where you sit in all of this but i kinda skimmed over all of it...
First off... This computer will be for gaming?
Second... Whats your Budget?
Im also going to just state it like this
Intel is leading right now i dont know how the new Barcelona will match up to it due to the fact that there are no benchmarks yet
Also if you plan on arguing a point (well you can since it will be your money) i suggest you do some research and not just look some some numbers and say heh i want that one... even tho you dont know wtf your talking about...
Trust me when i say this do your homework and you wont be sorry...
I spent somewhere around 3 months researching what i wanted in a new computer before i bought it in April of 2007.
I have no regrets about my computer at ALL none because i did my homework and found the best parts for the money at the time. And since your ordering from an online source most likely you have a wealth of parts to choose from all being diffrent in every little way even tho some might look the same...
Some sites to learn more about stuff would be
www.anandtech.com
http://hardforum.com/
As for the computer you have selected i have some suggestions you may or may not take into heart...
CPU: Back when i built mine the quads were still in the upper $800+ range so i was like no thats pretty much my budget...
But now that the quads are litteraly $50 more than the 6700 why not go for 4 cores? I wont argue this point becasue of the price diffrence but back then it would have gone like this
There are no programs out for the general public (your casual gamers and such) that will and can utilitize all 4 cores so go for a E6600 is what i would say since they were already planing on going for a $800 cpu...
And now that we really dont know where AMD will be with there new release and where Intel will be with there new release both happening withing the current year... Its really hard to choose... AMD will have a NATIVE quad core for sure while intel is still rolling out the non native quads (2 dual cores on 1 chicp instead of 1 quad) So in respect to that the AMD will be faster compared to intel.. But then you also need to look at power consumption where intel is just totaly wooping amd at...
Intel has the better price for speed/temp/power for the buck while amd is traling behind somwhere in the distance...
So chooseing a CPU at this time is a hard choice you need to choose the path you want and stick to it...
MOBO: Pretty much get a nice chipset 4 240pin ddr2 slots dual channeled and enough slots to fit your needs... You dont need to get a super high end board when a lower middle of the water board can handel everything you need...
So here the question
Do you plan to overclock? How many GPU's do you want to have? Do you have any extra pci, pci-e x1 cards to put into the machine?
RAM: Id have to say this is the most important part next to the graphics card in a system... at least for a gaming rig...
I would recomend that what ever you do dont go under 2gbs in todays day and age even if its just for browsing a web at some times... especialy with Widnows VISTA (i hate vista so i wont talk muich about it) which is a memory hog in its self... so 2 gbs will save you but if the game you want requires 1.5gbs and it was for xp plan on at least 2gb for vista...
Gets some cheap fast ram no need to spend 140 bucks on a gig of ram you can get some really nice packages of 2gbs for about 80 bucsk now!
GPX: In my opinion the most important part of the whole machine i build my machine around this and the rest jsut falls into place... I wont state waht i bought in here ill save that for later on... but in frank the gpu is where your center of attention must rest if you plan to game or do anything graphical above just browsing the internet...
From what I understand since i kinda gave up reading about things after i bought my machine (atis cards came out right after i bought my computer i decided to skim over some of them) For the most part unless you went to the TOP of ati's lineup and spent about $600 bucks on the card And the top of the line ati card just barely beats the top of the line nvidia card
however atis cards are higher hd quality than nvidias are so theres your trade off... I personally like nvidia more than ati and i also know more about them but from what i was getting the ati cards are not that hard to beat even in crossfire...
OS:
Win XP hands down i don't like to talk about windows (GAY) Vista since its a memory hog and is made for IDIOTS who don't know how to work a computer... unless you want to talk Linux id stick with Windows XP at least home id go pro for the extra 50 bucks or w/e it is...
PSU: Make sure you get a reliable and have enough power in your power supply DO NOT get one that comes with a case unless it happens to be a high end one which i highly doubt... but you never know... so lol
Make sure it has good rails and high efficiency
heres a nice website too lookup how good a psu is
http://www.jonnyguru.com/
CASE: Depending on how much room you have where the computers going id get a big case they can allow for more room later on and especially with all these HUGE graphics cards you need the big cases. Make sure it has 120 mm fans and not 80 or 90mm fans they spin faster and are alot louder than the 120's
Other than that its extras to add to the system... and i dont care or know much about them since its pretty much up to the user...
Now onto what i have just so you can see how this can comapre to other things...
CPU: E6320 1.86 ghz oced it to 3.0 ghz can go higher but havnt done it... (i waited for the 20's becasue i wanted the 4mb l2 cache which means more time between the cpu having to talk to another source to get stuff)
MOBO: Gigabit DS3 (Highly oc board for pc enthusiests at a low price only downside is 1 pci-e x16 slot so only 1 gpu)
RAM: 2gb (2x 1gb) DDR2 800 G.SKILL hk ram
GPU: 8800 GTS 640mb
PSU: XCLIO GOODPOWER 500W
the rest should not matter to you...
in the end my system cost me $1,100 US (i rounded it a bit so it would be some nice numbers...) I do not regret anything i put into my system as of yet but you know what i shouldnt ever. I bought what was the best bang for the buck at the time i bought it... i also had to make sacrifices because i wanted a higher end graphics card to place games with which is why i had to upgrade for my old computer thats now our houses server... I also made sure id have room to upgrade later on without having to replace everything...
Suchj as the CPU i looked at where Intel was going and since the product was FAR supirior to anything that amd had out at the time i went with them instead of AMD... I also went for a 4mb l2 cache instead of the 2mb and i got a mother board that was easy to overclock with so i woudlnt have to replace my parts as soon instead i could oc and maybe get another 6months to a year out of the machine... And since i wasnt planing on having 2 gpus i was able to get a cheaper power supply that could support 1 gpu no problem...
So now to help you with your computer since you probably want to know some stuff here...
Since you plan on running 2 gpus get a nice pus i sujest a corsairs 620watt its a very powerfully and stable psu and can run sli, crossfire with ease.
for the graphics card i would recomend getting a 8800 GTX and possible adding a second one down the road unless you are doing some super graphics intensive things... right away... I have the GTS 640 and im running eveything on highest settings and still getting high fps there is really know need for 2 at the moment unless of course you truly need it its more or less jsut saying hey ive got 2 of these cards in sli... or course if your running 2 monitors at high resolutions you might want 2 but thats up to you...
Onto the mobo it all depends on how many gpus you want... all game manufactures are going to make the games for the lower end 8600 graphics cards if not even lower... but the games can scale up for the higher end cards with the settings and such... so keep this in mind
Id look at getting a board with 2 pci-3 x16 slots so you can add that second one if u want to I recomend a EVGA board (any of them) or some of the high end ASUS boards or even Intel
for ram at least 2 gigs MIN!!!!!
hard drive i dont know how much porn (you might not but i was using it as a joke so dont take it litteraly) you like to download but id get at least a 250 gig or maybe get a 500 gig
if you have the money id get a raptor and a 500 gig run the os and any games off the raptor and use the 500 for file storage
for a case get a nice big on antec 900 works i have a xion stacker its a huge case and the new cards fit nicely
If you need any other help feel free to ask here or via pm im more than happy to share my knowledge...
O btw for a monitor do not get a 16ms response time.. get a 5ms or a 2ms somewhere around there... the cost about the same...